The girls were thrilled to be on the red carpet, dishing to E! News that they were excited to be honored at such a young age.
Fledgling model Kendall wore a low-cut mint blouse with sheer sleeves, a white mini and strappy silver stilettos, while 13-year-old Kylie rocked an edgy white lace blouse with an asymmetrical black skirt and black pointy-toe heels.
Keeping it all in the family, big sister Khloé Kardashian Odom was on hand to present the award to her half-siblings, natch.PHOTOS: Kendall Jenner: Swimsuit Model
"Had an amazing time presenting my baby sisters the award for most stylish sisters!" she tweeted after the show.
So where will they keep their new statuettes? In their bedrooms, the girls revealed.PHOTOS: Keeping Up With Kendall Jenner
Although Kim showed up at Kendall's sweet 16 the night before, the girls didn't have much to say when asked about her.
"She's great. We don't want to talk about it," they said.
Check out the stylish sisters, along with all the glammed-up stars—including Selma Blair, Eva Longoria, Mandy Moore, Chloe Moretz and more—in our brand-new Hollywood Style Awards 2011 gallery!